Policy communication for health and sustainability: comparison of food-based dietary guidelines

Abstract

Abstract Background Food-based dietary guidelines (FBDGs) provide advice on what constitutes a healthy diet, influencing both decision-making at the policy level, and educational programs addressed to consumers. There is a growing body of literature that allows to estimate the health and environmental impacts of the wide adoption of FBDG at the country and global levels. This unlocks the possibility of evaluating the most sustainable dietary guidelines from a communication perspective. This study aims at answering what are the key converging messages and main differences in the communication of FBDG that have a high environmental potential, and what of those FBDG do communicate a sustainability purpose in an explicit way. Methods A mixed-method comparative review of FBDGs with a two-stage sampling process was developed. Building on Springmann et al (2020) we identified the countries where the wide population adoption of dietary guidelines would have the highest potential of reducing food-related greenhouse gas emissions (GHGe) while delivering positive health outcomes. In a second stage, a purposeful sample of FBDGs was designed to cover countries from different WHO regions, income levels, and languages. Results This study is in progress and results are preliminary. Out of the initial sample of identified FBDG with a GHGe reduction potential of more than 25 percent, a few of them, Germany, Brazil, Sweden, Netherlands, and France had been previously identified in the literature as having sustainability-based recommendations. Other guidelines with similar GHGe reduction potential, such as those of Switzerland and Italy also address sustainability in an explicit way. Conclusions FBDGs have been traditionally focused on health and nutrition messages. Several countries have updated recommendations considering the environmental impacts of food consumption. Not all the FBDG with a high environmental potential explicitly communicate sustainability concerns. Key messages Several countries can improve their health and climate change outcomes by promoting a wider adoption of their official dietary guidelines. Communication is a key aspect of this process.